Merge pull request #12166 from luotao1/fix_demo

fix simple_on_word2vec fails on Manylinux1

paddle/contrib/inference/demo_ci/run.sh

@@ -44,15 +44,18 @@ for WITH_STATIC_LIB in ON OFF; do
     -DWITH_GPU=$TEST_GPU_CPU \
     -DWITH_STATIC_LIB=$WITH_STATIC_LIB
   make -j
+  word2vec_model=${PADDLE_ROOT}'/build/python/paddle/fluid/tests/book/word2vec.inference.model'
+  if [ -d $word2vec_model ]; then
     for use_gpu in $use_gpu_list; do
       ./simple_on_word2vec \
-      --dirname=${PADDLE_ROOT}/build/python/paddle/fluid/tests/book/word2vec.inference.model \
+        --dirname=$word2vec_model \
         --use_gpu=$use_gpu
       if [ $? -ne 0 ]; then
         echo "simple_on_word2vec demo runs fail."
         exit 1
       fi
     done
+  fi
   # ---------vis_demo---------
   rm -rf *
   cmake .. -DPADDLE_LIB=${PADDLE_ROOT}/build/fluid_install_dir/ \